Signaling system.



H. 0. RUGEt SIGNALING SYSTEM. PFLIUATIOH FILED PBEM. 1909.

Pate'nte June 7'? 19m.

. narran sra-:rss PATENT OFFICE.

minero. nnen, or' SANDWICH, ILLINOIS,4 AssIGNoR 'To SANDWICH ELECTRIC "COMPANY, or' SANDWICH, ILLINoIs-A CoRronArIoN or ILLINoIs.v

SIGNALING SYS'JJIEM.-

Spelci'cation of Letters Patent.

'Application med February 15, 1eo9. serial No. 478,086.

To all whom 'it may concern:

Be it known that I, HARRY O. RUCH, citizen of-the United States, residing at Sandwich, inA the county of Dekalb and State of Illinois, have invented a certain new and useful Improvement in Signaling Systems, of which the following is a full, clear, con; cise, and exact description, reference being hadto the accompanying drawings, form inv a part o f this specification. ily Invention relates to signaling systems,

and has for its object` the provision of an improved 'system of interlconnnunication bef tween a tra-in despatcher and the various stations connected with his oiice in the o)- eration of railway telephone systems. n' systems of this kind, the despatcher is usually present at his telephone set, and is communicating almost continuously with one or the other of the various stations on his line. Selective signalm means have been provided, whereby-the espatcher can call any desired station, but it has heretof fore been impractic'able to cali a despatchers` ofhce froni the various -substationsp should the despatcher be temporarily-away .from his telephone.

Itis oneof theobjects of my invention toavoid this difficulty. A I will describe my invention more vin detail by reference to the accompanying drawing, illustrating ,the preferred embodiment thereof, in which. I have shownia central station A, uniting threesubstations, B, C and D. I have shown two' line lconductors, 1 and 2, .as uniting the' variousstations,

:At thede'spatchers station A, I have-shown a despatchers telephone set, onsisting of the receiver 3, the induction coill 4, transmitter 5, and battery 6, which-in this instaneeare shown. permanently connected lto, the line wires. I"fur'tlier provide at the. central station means for sending signaling impulses to the substations, and for-releasing said signaling ineansat the subStatIOnS, which,i signal sending means consists of a battery 7 having the reversing springs 8, 8, which,l in connection with contact points, as shown, are adapted toreversefthe polar,

ity of tliebatteiy 7 upon the line Wires 1 and 2. I also show a key 9, 'which-is adapted to be actuated to transmit positive battei'y impulses over the line wire 1, and back normal being connect over the line wire.2, from the battery 7,

'ation selectively, and restore it to normal.

'The improved means which I employ at the central' or despatchers station to call a de- 'spatcher consists of a. relay 12, which,

through the interposition of key 13 is adapt'- ed for connection to battery 7, independently of line wires 1 and 2, normally at the central station.

' It will-be. seen from the illustration that ,when the despetcher leaves his telephone set-'and sets over his key 13 in anticipation of a call, the positive battery current is connected toI one terminal of the relay 12, but said relay is not otherwise associated with the line wires 1 and 2. On the other hand, the neative terminal of the'battery 7 is associated with the line wire 2. rela 12 is actuated, said relay to the ground, as' will be more fully described hereinafter, it closes the circuit through its armature 14, thus to When t e actuate a local signal 15 through the agencyl of the Battery 16. The relay 12, therefore,Y

it will b\seen, does not obstruct no1 in any way .interfere with the line wires 1 and 2,

when it is placed in operative position."

Now, in order to 'operate this relay 12, I show at each substation a contact lever 17,

which, through the agency of the impedance,

Coil 18, is a apted to' ground the line' wire 2, when said lever 17 is actuated. Thus, it will be seen that any substation can actuato the relay 12, as circuit is established when the lever is depressed, as follows: from the-ground, through the lever 17, impedance coil 18, line wire 2, reversing spring 8, but` tery4 7, reversing spring 8, lever 13, relay 12,.

to gfround, thus calling a train despatcher when temporarily absent.l

At each substation I have shown the polarized relays 19, 19, 19, which, through the agency of the positive impulses oing out over the line wire' 1 .and coming ack over Patented June 7,1910.

anism to normal, when t the line Wire 2, are adapted to step up the selective mechanism to call a desired substation, and said relays when oppositely actuated serve to release the substation select ive mechanism. I have shown only at -station D the complete selective substation mechamsim as 1t is similar 1n stations C and D, except that the contacts on the selective mechanism are placed at different angles, whereby the desired station may be called by the train despatcher b 1 operating the key 9, or released by operating the said relay 19 to cause operation of the relay 20, the relay serves to release the stepup mechanismfas stated. When the stepup mechanism 2l comes to its normal position, it opens the circuit through the spring 26, thus to prevent further actuation of the relay 25'by positive or negative impulses. When the lever 22 is associated with the spring 23, circuit throu h relay 27 is establlshe which calls the -ocal signal 28, and

thereby notifies the despatcher thatA he is desired at the central station.

I have used the same numerals at the substations as used at the train despatchers station.

While I have herein shown the preferred embodiment of my invention, what I claim as new and desire to secure by Letters Patent is:

A signaling system comprising line con` ductors uniting a central station and a plurality of substations, a telephone set at each substation having a switch-hook, a' despatchers telephone set vat the; central station normally 1n `,condition for use and connected with said line conductors, selective signaling devicesrassociated with said line conductors whereby the central station can selectively call any substation, a local signal at the central'station, means associated with one line conductor for controlling said signal and s\vitching.`means associated with the same-line conductor operable independently of said switch-hooks at each substation for operatin said local signal when the delspatchers telephone set is tempovarily nnozcupied.

I u Witness whereof I hereunto subscribe my name.

HARRY o. RUG-H. W 1l nesses:

MAX W. ZABEL, O. M. WnnMrnL. 

